BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 238 filers reported holding BLUEBIRD BIO INC in Q1 2021. The put-call ratio across all filers is 1.69 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $769 | -7.6% | 253 | 0.0% | 0.00% | – |
| Q2 2023 | $832 | +3.4% | 253 | 0.0% | 0.00% | – |
| Q1 2023 | $805 | -54.0% | 253 | 0.0% | 0.00% | – |
| Q4 2022 | $1,751 | -70.8% | 253 | 0.0% | 0.00% | – |
| Q3 2022 | $6,000 | 0.0% | 253 | 0.0% | 0.00% | – |
| Q2 2022 | $6,000 | 0.0% | 253 | 0.0% | 0.00% | – |
| Q4 2021 | $6,000 | -25.0% | 253 | 0.0% | 0.00% | -100.0% |
| Q2 2021 | $8,000 | 0.0% | 253 | 0.0% | 0.00% | 0.0% |
| Q1 2021 | $8,000 | -27.3% | 253 | 0.0% | 0.00% | 0.0% |
| Q4 2020 | $11,000 | -21.4% | 253 | 0.0% | 0.00% | 0.0% |
| Q3 2020 | $14,000 | -6.7% | 253 | 0.0% | 0.00% | 0.0% |
| Q2 2020 | $15,000 | +25.0% | 253 | 0.0% | 0.00% | 0.0% |
| Q1 2020 | $12,000 | -45.5% | 253 | 0.0% | 0.00% | -50.0% |
| Q4 2019 | $22,000 | -4.3% | 253 | 0.0% | 0.00% | 0.0% |
| Q3 2019 | $23,000 | -28.1% | 253 | 0.0% | 0.00% | -33.3% |
| Q2 2019 | $32,000 | +14.3% | 253 | +40.6% | 0.00% | +50.0% |
| Q1 2019 | $28,000 | +64.7% | 180 | +4.0% | 0.00% | 0.0% |
| Q4 2018 | $17,000 | -32.0% | 173 | 0.0% | 0.00% | 0.0% |
| Q3 2018 | $25,000 | +47.1% | 173 | +55.9% | 0.00% | 0.0% |
| Q2 2018 | $17,000 | +41.7% | 111 | -44.5% | 0.00% | +100.0% |
| Q4 2016 | $12,000 | +9.1% | 200 | -18.4% | 0.00% | 0.0% |
| Q2 2016 | $11,000 | +10.0% | 245 | 0.0% | 0.00% | 0.0% |
| Q1 2016 | $10,000 | -16.7% | 245 | +26.9% | 0.00% | -50.0% |
| Q4 2015 | $12,000 | – | 193 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| TANG CAPITAL MANAGEMENT LLC | 6,335,528 | $40,104,000 | 4.92% |
| qPULA Trading Management LP | 14,344 | $91,000 | 0.80% |
| Frazier Life Sciences Management, L.P. | 1,440,757 | $9,120,000 | 0.70% |
| Ikarian Capital, LLC | 462,628 | $2,928,000 | 0.58% |
| Birchview Capital, LP | 98,000 | $620,000 | 0.44% |
| HealthCor Management, L.P. | 455,000 | $2,880,000 | 0.36% |
| Financial Advocates Investment Management | 45,071 | $3,538,000 | 0.29% |
| PDT Partners, LLC | 262,767 | $1,663,000 | 0.25% |
| Monaco Asset Management SAM | 80,000 | $506,000 | 0.19% |
| Summit X, LLC | 103,424 | $651,000 | 0.19% |